Ever thought of a Canon 300D Mick. Good for both worlds. Then if you decide the the costs are becoming astronomical (
god I kill me sometimes
) and it's not for you then at least you've still got a very good normal camera. Althought I did hear that Rumples Riot may be willing to part with his DSI (
)
Or you could join the ever expanding crowd of proud ToUcam owners and start with lunar and planetary imaging.